Detector for wireless telegraphy.



T. L. MANNING, JR.

DETECTOR FOR WIRELESS TBLEGRAPHY.

APPLICATION FILED fiE-PT. 80, 1911.

1,052,355., Patented Feb. 4, 1913.

FULL

W! T INVENTOR A f/away THOMAS L. MANNING, 33., OF WARREN, OHIO.

DETECTOR FOR WIRELESS TELEGRAPHY.

Specification of Letters Patent.

Patented Feb. 4, 1913.

Application filed September 30, 1911. Serial No. 652,092.

To all whom it may concern:

Be it known that I, THOMAS L. MANNING, Jr., a citizen of the UnitedStates of America, residing at \Varren, in the county of Trumbull andState of Ohio, have invented certain new and useful Improvements inDetectors for lVireless Telegraphy, of which the following is aspecification.

This invention relates to detectors adapted for use in wirelesstelegraphy, and has for its object to produce a device of this naturewhich will be simple in construction,

and convenient to regulate the quantity of pressure on the granularmaterial while making experiments of various kinds.

To these ends the invention consists in the novel details ofconstruction and combinations of parts more fully hereinafter disclosedand particularly pointed out in the claims.

Referring to the accompanying drawings forming a part of thisspecification in which like characters designate like parts in all theviews :Figure 1 is a perspective view of an apparatus built inaccordance with my invention; and, Fig. 2 is a bottom plan view of theparts shown in Fig. 1.

3 is a base of suitable non-conducting material carrying the frame 4',secured to said base by the screws 5, 5'. Screw-threaded posts 6, 6 risefrom said base, and are suitably secured thereto by the screw heads 6, 6(Fig. 2).

7 represents a container or cup, which may be lined with silver or othergood conductor, and is filled with silicon, metallic fillings, or othermaterials usually employed in detectors of this nature. The cup issecured to the base 3, and has the extension 8 extending through saidbase to which the wire 19 is attached. A screw-threaded rod 9 extendsthrough the frame 4, and is provided with a pointed tip 10, adapted tocontact with the granular or other material, contained in the cup 7. Thesaid tip may be moved up and down by turning the screw through themember 11. Above the cup 7, I provide a plate 12, through which thescrew rods 6, 6 pass. Surrounding these rods or posts, above the plate12, are the spiral springs 14, and above the springs, are the nuts 15.

16 represents a binding post connected by the wire 17 to the screw 5,and 18 represents a similar post connected by the wire 19 to the cupmember 8 of the cup 7.

' In operating my detector, the granular, or other material, is retainedin the cup 7 by a ring 21 of solder, or other partial cover, and thepressure of the plate 12 on said material, and therefore, thesensitiveness of the detector, can be regulated by adjusting the .nuts15. Again, since the plate 12 is provided with the perforation 22,immediately above the granular material, it is evident that additionalmaterial may be quickly and easily added to the cup through saidperforation when experimenting, and granular material may as quickly betaken from said cup after lifting said plate against the pressure of thesprings 14. Of course, said springs immediately restore the plate 12 toits normal position when released.

It will therefore be seen that my device provides a simple and readymeans through the screw 9 of adjusting the sensitiveness of thedetector, while the nuts 15, springs 14 and plate, provide a means ofvarying the pressure on the granular material, and the perforationprovides a ready means of adding to said material or adding additionalmaterial Without disturbing the other parts. Further, it will be seenthat various materials may be conveniently experimented with or triedout in the cup'7, with a minimum loss of time.

It is obvious that those skilled in the art may vary the details ofconstruction as well as the arrangement of parts without departing fromthe spirit of my invention, and

therefore I do not wish to be limited to the above disclosure except asmay be required by the claims.

What I claim is 1. A detector foruse in wireless teleg raphy comprisinga receptacle for wave responsive material; a loose plate above saidreceptacle provided with a central hole through which material may beadded to said receptacle; springs to normally press said plate on tosaid receptacle or its con-- tents; threaded means for adjusting saidsprings; an adjustable means adapted to contact with the said waveresponsive material; and means for joining said material and contact inaerial circuit, substantially as described.

2. In a detector for wireless telegraphy, a receptacle adapted tocontain a ranular material having an open top; a ring partially closingsaid receptacle; a plate having a perforation registering with said opentop adjustably mounted over said receptacle; nut controlled springs foradjusting said plate; and an ad uStabIe contact adapted to enter saidreceptacle through said perforation, substantially as described.

3. In a detector, the combination of a non-conducting base; bindingposts thereon adapted for aerial and battery wire conmeet-ions; aconductive frame attached to said base electrically connected to one ofsaid posts; a threaded rod carried by said frame; a receptacle for waveresponsive material attached to said base into which said rod may dip;an electrical connection from said receptacle to the other of saidposts; threaded osts attached to said base; a perforated p ate partiallycovering said receptacle, loosely supported by said rods; and

adjustablydyielding means adapted to hold said plate own on saidreceptacle, substantially. as described.

4. In a detector, the combination of a receptacle for holdin granularmaterial; a pointed threaded r with said material; a ring for partiallyboldingsaid material in said cup; a plate having a perforation'reistering with said ring ocated above sai cup; s rings for pressing saidplate toward sai cu and material; threaded rods carryin said plate and srings; nuts on said rods or regulating t e com ression of said springs;and connectors a apted to include said anular material and pointed rodin an e ectrical circuit, substantially as described.

In testimony whereof I afiix my signature in presence 0 two witnesses.

THOMAS L. MANNING, JR. Witnesses:

J. B. COLE, A. S. PHELPS.

adapted to contact'

